Birth & up. Have fun learning and talking with your baby about all the fun animals you see in this vibrantly-illustrated Indestructibles® Animal Book set. Your little one will enjoy stories they can literally "chew on." This set of 3 paperback books by Kaaren Pixton contain 6 pages each. Soft and paper-like, these books are chew proof, rip proof, non-toxic, and dishwasher and washing machine safe!